Three-Dimensional Upwelling Beneath a Mid-Ocean Ridge

大洋中脊下的三维上升流

• 批准号: 9018421
• 负责人: Jason Phipps Morgan
• 金额: $ 14.44万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-02-15 至 1993-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018421&HistoricalAwards=false
• 关键词: Three; Dimensional; Upwelling; Beneath; Mid

This is a theoretical study of the dynamic processes shaping mantle flow beneath mid-ocean spreading centers. three dimensional numerical models of flow beneath a spreading center will be constructed to try to explain observed bulls-eye gravity anomalies along slow-spreading ridges and their absence along intermediate and fast spreading ridges. The models will include the irreversible effects of melting on shaping the density structure and will explore the effects of spatial, temperature, and composition dependent rheology.

这是一项理论研究，对塑造地幔流的动态过程的理论研究。 将构建在扩散中心下方的流动的三维数值模型，以试图解释沿缓慢膨胀的山脊及其沿中间和快速扩散山脊的观察到的公牛 - 眼重力异常。这些模型将包括熔化对塑造密度结构的不可逆转影响，并将探索空间，温度和组成依赖性流变的影响。